Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. In 1.6.2 and earlier, a resource exhaustion vulnerability in joserfc allows an unauthenticated attacker to cause a Denial of Service (DoS) via CPU exhaustion. When the library decrypts a JSON Web Encryption (JWE) token using Password-Based Encryption (PBES2) algorithms, it reads the p2c (PBES2 Count) parameter directly from the token's protected header. This parameter defines the number of iterations for the PBKDF2 key derivation function. Because joserfc does not validate or bound this value, an attacker can specify an extremely large iteration count (e.g., 2^31 - 1), forcing the server to expend massive CPU resources processing a single token. This vulnerability exists at the JWA layer and impacts all high-level JWE and JWT decryption interfaces if PBES2 algorithms are allowed by the application's policy.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
AVAILABLE
Momentum
STABLE
If you run products in this scope, you should treat this CVE as relevant to your environment.
| Date | Total | Labels |
|---|
| 2026-03-03 | 2 | Disclosure2 |
| 2026-03-04 | 1 | Disclosure1 |
CVE-2026-27932 joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. In 1.6.2 and earlier, a resource exhaustio… https://www.cve.org/CVERecord?id=CVE-2026-27932
Post summary
The text announces a resource exhaustion vulnerability (CVE‑2026‑27932) in the joserfc Python library, with no evidence of exploitation, PoC, or mitigation.
CVE-2026-27932 Denial of Service via Unbounded PBES2 Iterations in joser... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-27932 Don't wait vulnerability scanning results: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=2
Post summary
A new CVE (CVE-2026-27932) is disclosed, describing a Denial of Service vulnerability caused by unbounded PBES2 iterations in joser, with links to vulnerability details and scanning alerts.
🚨*CVE* CVE-2026-27932 joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. In 1.6.2 and earlier, a resource exhaustio… https://www.cve.org/CVERecord?id=CVE-2026-27932 ----- Traducción: CVE-2026-27932 jos… http://infoflow.cloud`
Post summary
CVE-2026-27932 is a resource exhaustion vulnerability in the joserfc Python library affecting versions 1.6.2 and earlier, with no PoC, exploit, or patch mentioned.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | hsiaoming | joserfc | - | python | - |